William dunn



(No Model.)

W. DUNN.

GAR COUPLING.

Patented Apr. 7. 1885.

N. PET s. Pholo-phogmvmr washin ton, u.c.

UNITED STATES PATENT OFFICEG WILLIAM DUNN, OF NEWV YORK, N. Y., ASSIGNORTO GALVIN B. MCQUESTEN,

OF SAME PLACE.

CAR-COUPLING.

SPECIFICATION orming part of Letters Patent No. 315.015, dated April 7,1885.

Application filed February 27; 1885. (No model.)

T aZZ whom it may concrn:

Be it known that I, WILLIAM DUNN, of the city, county, and State of NewYork, have invented certain new and useful Inprovements in Gar-Couplers,of which the following is a full, clear, and exact description, thatwill enable others skilled in the art to which they appertain to makeand use the same, reference being had to the aeconpanying drawings.

IO This invention relates especially to that class of car-couplers inwhich the connecti ing -link is held by a. swinging hook which lies in asocket in the draw-head and is pivoted to the draw-head by a pin that ismade rigid with the hook, and is provided with a crank-arm,by which thehook can be lifted to release the connecting-link. With thisconstruction much wear of course comes upon the crank-pin which holdsand through which the swinging hook is operated, andit is thereforedesirable to makesuch pins so that they, as well as the books, when wornout or broken, may be readily removed and substituted by others; and tothis end, also, it is requisite that the hook and pin be so constructedthat they may be put in place and secured without the necessary use ofhandtools; and, furthermore, they should be of the simplest possibleform, so as to be cheaply made.

My invention consists of a hook for engaging the connecting-link, whichhook is provided with an angular hole at its pivot end, and lies in asuitable mortise or socket in the 3 5 draw-head; and it also consists ofa crank-pin for holding such hook in place, this crank-pin beingflat-sided where it passes through the hook to correspond with theangular opening in the hook, and to be rigid therewith, while itsbearings in the draw-head are circular, the one next the crank-arm beinglarger than the angular part of the pin, and the one at the other end ofthe pin being smaller than such angular part. A In the drawings, Figure1 is a central vertical section of a car-coupler embodying myimprovements. Fig. 2 is a side View of the same, and Fig. 3 is aVertical cross -section through the crank-pin bearings.

bearing of the same.

In these views Arepresents the draw-head. B is the hook that engageswith the connecting-link G. D is an angular hole at the pivot end of thehook. E is the pivot-pin which holds the hook in-place in the draw-head.F is the crank-arm on the end of such' pin. G is the larger circularhearing of the crank-pin in the draw-head. H is the smaller circular Iis the fiat-sided or angular part of the pin which passes through theangular hole in the hook. J is a key for o holding the pin in place. Kis ,a chain attached to the crauk-arrn and running to any suitable placeor connection, and is for lifting the hook; and L is a chain-pulley forguiding the chain, so that it shall lead from the crankarm in the properdirection to lift the hook when pulled.

It will be seen that the smaller circular end of the pin, in order topass through the hook to its hearing in the draw-head, must be of lesssize than the fiat-sided portion that is intended to be in the hook;also, that to permit the lat-sided portion' of the pin to enter to thehook, the holein the draw-head, through which it nust pass, should be aslarge or 7 5 larger than such square or fiat-sided portion.

By this arrangement the crank -pin can be v i made, by its angularportion, to have such a connection with the hook as is necessary to liftthe hook, and this, too, without other means so of attachment, and yetcan be readily removed when, by reason of being` worn out or broken, itbecomes necessary to substitute another for it. Furthermore, thefiat-sided portion of the pin forms a shoulder which bears against theinner face of 'the draw-head, and the larger circular bearing forms alike shoulder that bears against the hook, thus keeping the parts inproper relation and preventing binding and chucking when slightly worn.

I have shown in the drawings a well-known form of key for holding thepin in place; but of course any other suitable device might be used forthis purpose.

The hook may be of any other suitable form 5 that will answer thepurpose, and it may be socketed in the draw-head difierently, or thedraw-head itself may be changed without departing from the features ofinvention, and I than the said fiat-sided part, as' and for thetherefore I do not confine myself to the prepurpose set forth. ciseforms shown. 2. In combnation, the draw-head A, the

What is claimed as new ishook B, having hole D, and the crank-pin E I55 1. The eombin ation, in a ear-coupler, of a F, having the circularbearings G H and the hook for engaging the eonnecting-link, and a ifiat-sided part I, for the purpose described. pivot forfastening saidhook to the draw'head, T which consists of a crank-pin that isflat-sided WILLIAM DU) in the middle to fit into an angular hole inwitnesses: IO theh00k,andhas eireularbearngsinthedraw- JOS. E. DUNHAM,head, one of which is larger and one smaller' W. H. SMITH.

